Reduction-furnace.



T. F. BAILY L F. T. COPE.

REDUCTION FURNACE.

APPLlcAnoN FILED 11111.25. 1918.

1,291,716. Patented 1.111,21, 1919.

UNTED sfrafrus AE THADDEUS F. BAILY D FRANK T. COPE, ALLIANCE, OHIO, ASSIGNORS TO THE ELECTRIC FURNACE COMPANY, OE ALLIANCE, OHIO, A CORPORATION OF OHIO.

REDUCTION-romance.

Specification of Letters Patent.

Patented Jan. 21, 1919.

Appication led January 25, 1918. Serial No. 213,630.

Y To all 'whom t may concern:

Be it known that we, THADDEUS F. BAILY and FRANK T. COPE, citizens of the United States, bothl residing at Alliance, in the county of Stark and State of Ohio, have invented a new and useful Reduction-Furnace, of whichthe following is a specification.

This invention relates to reduction furnaces and has more especial reference to a furnace comprising a heating chamber and an elongated hood with means for passing the material first through the heating chamber and then through the elongated hood where it slowly cools before being passed into the outer atmosphere.

The object of. this invention is to provide -a reduction furnace with means for slowly cooling the material after it is passed out of the heating chamber of the furnace.

A further object is the provision of a reduction furnace comprising a heating chamber in which the' material is treated and an elongated hood communicating with said heating chamber, through which the material ispassed, allowing the material to slowly cool before it is passed out into the outer atmosphere.

With these objects in view the invention consists in the novel construction and Aarrangement of parts, hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claim, it being understood that various changes in the form, proportions, size and minor details of construction may be made within the scope of the appended claim, without departing from the spirit or sacrificing any of the advantages of the inchamber which is constructed of fire'brick or other suitable heat resisting material and is heated in any suitable and well known.

manner such for instance as the electric heating device disclosed in the drawings. A pair of resistance troughs 2 are shown,

.one located near each side wall of the heating chamber and spaced between the bottom of said heating chamber and the roof ance body consisting of a carbonaceous ma terial in granular form, such as crushed coke, charcoal or the like, said carbonaceous material being designated in the drawings by the numeral 6. Embedded in the resistance material, preferably near. each extremity of each trough is an electrode 7, said electrodes extended through the furnace walls as shown in the drawings. It will be understood that the electrodes should be arranged in an electric circuit, so that each current leaves the furnace on the same side on which it enters, such construction being well known in this art. Electric wires 8 are shown connected to eachv of the electrodes, said wires leading to a suitable source of electricity. When the current is supplied to the electrodes it will be conducted from one electrode to the other through the resistance material thus raising the resistance material to an intense heat. It will, of course, be understood that gas or other suitable heating means may be provided in the heating chamber instead of the electric resistance means above described.

Communicating with the heating chamber 1 is an elongated hood 9 through which the material is slowly passed after leaving the heating chamber, thus allowing the material to slowly cool before being passed into the outer atmosphere'. A sheet metal casing 10 is provided around the heating chamber and hood to retain the heat thereln.

Cars 11' are provided for the purpose of carrying the material through the heating chamber and the hood, said cars being provided With suitable receptacles 12 to contain the material to be treated within the furnace. Each car is provided with suitable wheels 13, which travel upon the track 14, which eX- tends entirely through the heating chamber and hood. A suitable heat insulating device is provided for the purpose of maintaining theA temperature beneath the carl'loors whlch will prevent any damage to the Wheels or track. Channel membersl 15 of refractory material are connected to the bottom walls .'the mouth of the heating chamber.

16 of the heating chamber and hood, the

downwardly depending flanges 17 thereofbeing located in the sand or other suitable sealing material 18 carried in the troughs 19 mounted upon the cars.

For the purpose of moving thecars con* taining the material through the `heating chamber and the hood a pusher mechanism is provided comprising the lever 20 which is pivoted at its lower end as indicated 21 and provided upon its upper end with a roller 22 arrangedto contact of each car as it is brought into positiorrat e lever 2O is pivotally connectedby means of a link 23 with a gear 24, said gear meshing with a pinion 25 fiXedly mounted upon a shaft 26, upon which shaft is also xedly mounted a worm gear 27 meshing with the worm 28 which is mounted upon the shaft 29 of the motor 30.

The operation of the device is as follows:-

'A car is placed upon the track 14 at the mouth of the heating chamber in the position indicated by A in Fig. .1, the pusher mechanismbeingthen in the position shown in said figure. This car is loaded with the raw material desired to be heat treated and when the motor 30 is started the pusher lever 20 is movedforwardly engaging the rear end of the car A and pushing said car intothe heating chamber, all of the cars ahead thereof being moved forward through the heating chamber and hood, the length of one car.

As each new car is brought into position this' operation is repeated, each car being thus slowly moved into the heating chamber where it receives the proper treatment, after which it is slowly moved through the elongated hood and allowed to slowly cool in order v that the temperature of the contents thereof with the rear endv may be near normal when the car emerges from the hood and comes into Contact wlth the outer atmosphere. at 32 upon the outer end ofthe hood, this door normally resting in the closed position and as each car emerges from the hood it contacts with the door raising the same to allowthe car to pass from the hood after which the door drops by gravity to the closed position, thus preventing the interior of the hood froml becoming unduly cooled.

ltwillbe understood that for the sake of illustration the train of material passing through the furnace is made up of the cars traveling vupon the track, but `Ait will of course be understood that any other suitable means may be provided of material through the heating chamber and hood without departing from the invention. v

We claim:

A Jfurnace comprising a'heating chamber, a hood of relatively small diameter extending l:from saidv heating chamber and communicating therewith,I a track entering said heating chamber and extending through said heating chamber and said hood, a plurality of cars carrying material to be heat treated located upon said track and an intermittently operated mechanism arranged to move said cars through the heating chamber and hood, the ysaid hood being designed to substantially fit about the sides and top of the said cars of material to revent the heat within the'said heating o amber escaping past said `cars of material.

In testimony that we claim the above, we have hereunto subscribed our names.

.A door' 31 is pivoted for passing the train 

